| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply apparatus capable of making the drive time of a target device longer than before even in an environment where no commercial power supply is available. <P>SOLUTION: A signal transmitted from a transmission antenna 23 of a transmitter 2 is received by a reception antenna 10, converted into an AC power by a signal reception part 19, and the power of the signal is measured by a power measurement part 18. If the measured power or voltage is higher than a threshold value, a power supply control part 17 sets the connection destination of a switching part 31 to an AC/DC converter 14 side. After converting into a DC power by the AC/DC converter 14, the AC signal (power) of the signal reception part 19 is converted into an AC voltage by an inverter 13, and is output to an output terminal 11 of an output plug 12. On the other hand, if the power measured by the power measurement part 18 is lower than the threshold value, the power supply control part 17 allows a battery 16 to provide power setting a charge/discharge control part 15 in a discharge mode. <P>COPYRIGHT: (C)2013,JPO&INPIT |
